23312215535451 has 12 divisors (see below), whose sum is σ = 33018916584312. Its totient is φ = 14627272492288.

The previous prime is 23312215535447. The next prime is 23312215535471. The reversal of 23312215535451 is 15453551221332.

It is not a de Polignac number, because 23312215535451 - 2² = 23312215535447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23312215535471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13444183410 + ... + 13444185143.

It is an arithmetic number, because the mean of its divisors is an integer number (2751576382026).

Almost surely, 2^{23312215535451} is an apocalyptic number.

23312215535451 is a deficient number, since it is larger than the sum of its proper divisors (9706701048861).

23312215535451 is a wasteful number, since it uses less digits than its factorization.

23312215535451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26888368590 (or 26888368573 counting only the distinct ones).

The product of its digits is 540000, while the sum is 42.

Adding to 23312215535451 its reverse (15453551221332), we get a palindrome (38765766756783).

The spelling of 23312215535451 in words is "twenty-three trillion, three hundred twelve billion, two hundred fifteen million, five hundred thirty-five thousand, four hundred fifty-one".